Louisville Slugger 2017 Solo 617 -3 Adult Baseball Bat (BBCOR) The Solo 617 is Louisville Slugger's new one-piece alloy bat and the lightest-swinging in the BBCOR line. The Solo 617 features an SBC Speed Ballistic Composite End Cap that's 50% lighter than Louisville Slugger's standard BBCOR end cap, resulting in the ultimate strength-to-weight ratio. The -3 bat that swings like a -5. It's revolutionary technology that helps create a one-of-a-kind bat. • SL Hyper Alloy with 1-piece construction for a stiffer feel and maximum energy transfer on contact • Speed Ballistic Composite End Cap (SBC) for the absolute lowest MOI and fastest swing speed in our BBCOR line • The most balanced swing weight in our line • custom Lizard Skin premium performance grip • 3132" standard handle Bat Specifications Drop: -3 adult bat Barrel: 2 58" Certified: BBCOR Swing Weight: Balanced Material: Aluminum Construction: One piece Grip: Lizard Skin Premium Grip